For the first time ever, on Friday, April 20, San Diegans can openly and legally celebrate the 4/20 holiday.

But, before revealing some of the day's special offerings, deals and celebrations, PACIFIC asked the question: "Where did the moniker 420 come from?"

Enter "The Waldos," a group of students from San Rafael High School in Marin County who, in a bit of Stand By Me fashion, set out to find a rumored patch of marijuana that was abandoned by a local coastguardsman. Each day the group would meet at 4:20 p.m., get high, and go out in search of the treasured patch. The secret slang and private joke was picked up and spread through generations across the globe.

There are many 420 stories out there, but The Waldos have gone so far as to document and verify their original use of the phrase. Learn more at 420waldos.com.

And now for some 420 deals and celebrations The Waldos would be proud of.

Munchie deals

Bao Beach

Deals by the handful at this Mission Beach shop. Enjoy two bao (Chinese steamed bread rolls filled with meat or vegetables) for $4.20.

Given its name, it's no surprise this sandwich shop will celebrate its Eighth Annual Cheba Hut 4/20 Party. For $4.20 get any nug (4-inch) sandwich, plus a collectable emblemed frisbee (at both San Diego locations). Those in the College Area with a larger appetite can participate in the food challenge for a chance to win free Cheba Hut for a year. Oh yeah, and don't miss out on the shop's butter sculpting contest.

Surf's up for this 420 deal. Enjoy two slices of hand-tossed East Coast-style pizza (select styles) for $4.20. In the immortal words of the Teenage Mutant Ninja Turtles, "Wise men say, 'Forgiveness is divine, but never pay full price for late pizza," or, we're sure they'd say, "on 420."

This Sorrento Valley dispensary aims to promote education and awareness with one-on-one consultations. Stop by on 4/20 and with the purchase of four items, you'll receive 20% off the entire purchase. Plus, with every purchase you can get a pre-roll for $0.01.

Parties

4/20 Appreciation

Since hops are closely related to the cannabis plant, it only makes sense that breweries like Duck Foot Brewing celebrate 420. Enjoy dank, double dry-hopped IPAs, keep the pint glass (for the first 50 hop-heads), giant beer pong and a hops rolling contest. Of course there will be munchies, which will be provided by Moster Crafts Food Truck.

Celebrate 4/20 during this inaugural event celebrating music (with a performance by Wyclef Jean), munchies and cannabis culture — although legally, no marijuana is allowed at the event. Check out this primer before you head to the festival.

Dubloadz, aka DJ/producer Dave Nardolilli, released his debut full length, Dubloadz and the 9000 Ghosts, last year. It features collaborations with Sullivan King, Virtual Riot, Anuka, and more. New single, Salt, is out now.

It's going to get HOT in Ocean Beach at this music-filled jam night. Enjoy musings from five artists starting at 7 p.m., as well as the contest to see who can take down 15 of Mother's Special EnFuego Bacon Wrapped Jalapenos the quickest. Apparently you'll have to take down a three-year defending champ for the cash prize and bragging rights.

Remember that story at the beginning of this story? Well, Northern California brewery Lagunitas Brewing Co. brewed a beer, The Waldos' Special Ale, in honor of that famed group of high school students. Swing by The Dog in Pacific Beach and enjoy drink specials on several special brews as well as swag from the brewery.